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Help with GPU overclock

post #1 of 10
Thread Starter 
Hey, my gpu has been artifacting in Starcraft 2 and Unigine DX11. I have it overclocked to 900 core 1800 shader and 2000 memory it's at 1.08 V. Is it normal to go higher than this in order to achieve these clocks stable? My card was reaching around 70 degrees max with this voltage when it was running Unigine DX 11 at 2x AA. Are the temps the problem?
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The Green Hornet
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post #2 of 10
Quote:
Originally Posted by CrunchyApple View Post
Hey, my gpu has been artifacting in Starcraft 2 and Unigine DX11. I have it overclocked to 900 core 1800 shader and 2000 memory it's at 1.08 V. Is it normal to go higher than this in order to achieve these clocks stable? My card was reaching around 70 degrees max with this voltage when it was running Unigine DX 11 at 2x AA. Are the temps the problem?
Your temps seem okay. What are your ambient temps like?

You may wish to bump up the volts to the next notch and see how that goes. Or lower your clocks with a little less voltage...
post #3 of 10
Thread Starter 
Im not sure exactly but its pretty cold, live in British Columbia, Canada plus I'm in a basement. I want my gtx 570 to be on par with a gtx 580 if not faster in terms of FPS. Trying to get ready for BF3.
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post #4 of 10
If you are artifacting on SG, then it would indicate to me that your clocks are not stable on those settings.

The main issue with upping the voltage past what you have now is 1) You are nearing your safe max volts & 2) the GPU will run hotter. Having said that, upping the volts may stablise those clocks.

Alternatively, lowing the clocks with a more thermally nicer voltage, may in fact, stablise your card as well.

Id suggest with that OC you have now, albetit a tad unstable, you have closed the gap between the 570 and stock 580. Keep in mind the 570 has 480 cuda cores and the 580 has 512, so the 570 will need a decent OC to be on par with a stiock 580.
post #5 of 10
Thread Starter 
Quote:
Originally Posted by Sethy666 View Post
If you are artifacting on SG, then it would indicate to me that your clocks are not stable on those settings.

The main issue with upping the voltage past what you have now is 1) You are nearing your safe max volts & 2) the GPU will run hotter. Having said that, upping the volts may stablise those clocks.

Alternatively, lowing the clocks with a more thermally nicer voltage, may in fact, stablise your card as well.

Id suggest with that OC you have now, albetit a tad unstable, you have closed the gap between the 570 and stock 580. Keep in mind the 570 has 480 cuda cores and the 580 has 512, so the 570 will need a decent OC to be on par with a stiock 580.
SG? Maybe I could run at 880 at 1.05v and it would be sufficient enough.
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The Green Hornet
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post #6 of 10
Quote:
Originally Posted by CrunchyApple View Post
Hey, my gpu has been artifacting in Starcraft 2 and Unigine DX11. I have it overclocked to 900 core 1800 shader and 2000 memory it's at 1.08 V. Is it normal to go higher than this in order to achieve these clocks stable? My card was reaching around 70 degrees max with this voltage when it was running Unigine DX 11 at 2x AA. Are the temps the problem?
If your not stable with those clocks @1.08 you got a dog or something else is wrong. Artifacting does not neccesarily mean your not stable, biggest sign of instability is having the drivers crash on you when gaming. If your temps are that low you should be able to turn up the voltage no problem, I'd try that.
Edited by whitemencanjump - 10/20/11 at 5:09pm
post #7 of 10
Thread Starter 
I seemed to Artifact in Unigine and Starcraft 2 but it never crashed.
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The Green Hornet
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post #8 of 10
Quote:
Originally Posted by whitemencanjump View Post
If your not stable with those clocks @1.08 you got a dog or something else is wrong. Artifacting does not neccesarily mean your not stable, biggest sign of instability is having the drivers crash on you when gaming. If your temps are that low you should be able to turn up the voltage no problem, I'd try that.
Quote:
Originally Posted by CrunchyApple View Post
I seemed to Artifact in Unigine and Starcraft 2 but it never crashed.
I must of had a brain sposion, I dont know where SG came from, I meant SC2.. my bad.

Either way, something isnt right on those settings. As you suggested, try 880 on 1.05v and see how that goes, At the end of the day, a difference of 20 mhz core and 40 mhz shader wont make an earth shattering difference to performance

A bonus with your proposed clocks and volts is, it should run a bit cooler.
post #9 of 10
Thread Starter 
Seems to be running stable at 880/1760 @ 1.05. Flatlined at about 62, thanks for the help!
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The Green Hornet
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post #10 of 10
Quote:
Originally Posted by CrunchyApple View Post
Seems to be running stable at 880/1760 @ 1.05. Flatlined at about 62, thanks for the help!
Most excellent, glad to be of help
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